=== HEADERS DIAGNOSTIC TEST ===

Test 1: Headers status before anything
❌ PROBLEM: Headers already sent!
   File: /home/isoadmin/public_html/portal/test-headers-diagnostic.php
   Line: 16

Test 2: Starting session with NO includes
<br />
<b>Warning</b>:  session_start(): Session cannot be started after headers have already been sent in <b>/home/isoadmin/public_html/portal/test-headers-diagnostic.php</b> on line <b>29</b><br />
✅ OK: Session started successfully!
   Session ID: 

Test 3: Session status
   Status: 1
   Session ID: 
   Session name: PHPSESSID

Test 4: Setting session variable
✅ Set $_SESSION['test'] = 'Hello from diagnostic script'
   Value: Hello from diagnostic script

Test 5: Including config.php
   Before include - Headers sent? YES (File: /home/isoadmin/public_html/portal/test-headers-diagnostic.php, Line: 16)
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